Open sign



FIG. 1 is a perspective view of a open sign showing my new design

FIG. 2 is a front elevational view thereof

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left side view thereof

FIG. 5 is a right side view thereof

FIG. 6 is a top plan view thereof

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an exploded view the present invention. 

The ornamental design for an open sign, as shown and described. 